Lanthanum Metal La CAS 7439-91-0 For Hydrogen Storage Matrix Material

The metal lanthanum, element symbol La, is the 57th element in the periodic table and belongs to the rare earth metal. It is silver-white, soft and ductile, with a melting point of 920 ° C and a boiling point of up to 3464 ° C. Lanthanum is chemically active and readily oxidizes in air, and is usually preserved in mineral oil or noble gases to maintain its stability.
Although the content of lanthanum in the crust is rare, it is widely used. In the field of energy storage devices, lanthanum is used as a doping element in solar cells to improve power generation efficiency; At the same time, it is also used to manufacture high-efficiency fluoride batteries. In the field of catalysis, lanthanum can be used as an automobile exhaust gas purification agent to convert harmful gases into harmless substances, and is used as a catalyst in chemical, petrochemical and other industries.

product details

products features

Name: Lanthanum metal

Molecular formula: La

CAS: 7439-91-0

Molecular weight: 138.91

Description

Lanthanum can be made into various forms: Lanthanum foil, Lanthanum block, Lanthanum rod and Lanthanum powder. The content of lanthanum in the earth's crust is 0.00183%, which is next to cerium in rare earth elements. Lanthanum metal is active in chemical properties. It quickly loses metallic luster when exposed to air and forms a blue oxide film. However, it can not protect metal, and then further oxidizes to form white oxide powder. Lanthanum metal can react slowly with cold water, it is soluble in acid and can react with many kinds of nonmetals. Heating can burn to produce oxides and nitrides. Hydride is formed by heating in hydrogen, which reacts strongly in hot water and emits hydrogen. Therefore, Lanthanum is usually stored in mineral oil or rare gas.

Specification

Name		La_3N	La_2N5	La_2N
Molecular formula		La	La	La
CAS		7439-91-0	7439-91-0	7439-91-0
Total rare earth TREM	%	≥99.5	≥99.0	≥99.0
La/TREM	%	≥99.9	≥99.5	≥99.0
Total rare earth impurities	%	≤0.1	≤0.5	≤1.0
Fe	%	≤0.10	≤0.20	≤0.30
Si	%	≤0.03	≤0.03	≤0.05
C	%	≤0.03	≤0.05	≤0.05
Property		As-cast metal, silver grey
Application area		Important additives for special steel, non-ferrous metal alloys, hydrogen storage materials, metal reducing agents
Package		Anti-oxidation measures sealed packaging, flexible packaging according to customer needs